How do I install Docker CE on Debian 11/10?, How can I install Docker Compose on Debian 11/10 Linux system?. In this guide, I’ll discuss a step by step installation of Docker and Docker Compose on Debian 11/10.
Docker is the most popular and widely used container runtime. It enables you to package and run your applications in isolated containers in a single server or cluster of Linux servers orchestrated by Kubernetes and similar tools.
There are two editions of Docker available.
- Community Edition (CE): ideal for individual developers and small teams looking to get started with Docker and experimenting with container-based apps.
- Enterprise Edition (EE): Designed for enterprise development and IT teams who build, ship, and run business-critical applications in production at scale.
This guide will cover installation of Docker CE on Debian 10 / Debian 11 Linux. But let’s first look at common docker terminologies.
Docker Components / Terminologies
Below are commonly used terminologies in Docker ecosystem.
- Docker daemon: This is also called Docker Engine, it is a background process which runs on the host system responsible for building and running of containers.
- Docker Client: This is a command line tool used by the user to interact with the Docker daemon.
- Docker Image: An image is an immutable file that’s essentially a snapshot of a container. A docker image has a file system and application dependencies required for running applications.
- Docker container: This is a running instance of a docker image with an application and its dependencies. Each container has a unique process ID and isolated from other containers. The only thing containers share is the Kernel.
- Docker registry: This is an application responsible for managing storage and delivery of Docker container images. It can be private or public.
Install Docker CE on Debian 11 (Bullseye) / Debian 10 (Buster)
Follow the steps covered in the next parts of this article to install and use Docker CE on Debian 11/10.
Step 1: Install Dependency packages
Start the installation by ensuring that all the packages used by docker as dependencies are installed.
sudo apt update sudo apt -y install apt-transport-https ca-certificates curl gnupg2 software-properties-common
Step 2: Add Docker’s official GPG key:
Import Docker GPG key used for signing Docker packages.
curl -fsSL https://download.docker.com/linux/debian/gpg | sudo gpg --dearmor -o /etc/apt/trusted.gpg.d/docker-archive-keyring.gpg
Step 3: Add the Docker repository to Debian 10 / Debian 11
Add Docker repository which contain the latest stable releases of Docker CE.
sudo add-apt-repository \ "deb [arch=amd64] https://download.docker.com/linux/debian \ $(lsb_release -cs) \ stable"
This command will add the line shown in
Step 4: Install Docker & Docker Compose on Debian 11/10
apt package index.
sudo apt update
To install Docker CE on Debian, run the command:
sudo apt install docker-ce docker-ce-cli containerd.io -y
Start and enable docker service:
sudo systemctl enable --now docker
This installation will add
docker group to the system without any users. Add your user account to the group to run docker commands as non-privileged user.
sudo usermod -aG docker $USER newgrp docker
Check docker and compose version.
$ docker version Client: Docker Engine - Community Version: 20.10.17 API version: 1.41 Go version: go1.17.11 Git commit: 100c701 Built: Mon Jun 6 23:03:17 2022 OS/Arch: linux/amd64 Context: default Experimental: true Server: Docker Engine - Community Engine: Version: 20.10.17 API version: 1.41 (minimum version 1.12) Go version: go1.17.11 Git commit: a89b842 Built: Mon Jun 6 23:01:23 2022 OS/Arch: linux/amd64 Experimental: false containerd: Version: 1.6.6 GitCommit: 10c12954828e7c7c9b6e0ea9b0c02b01407d3ae1 runc: Version: 1.1.2 GitCommit: v1.1.2-0-ga916309 docker-init: Version: 0.19.0 GitCommit: de40ad0
Log out and log back in so that your group membership is re-evaluated.
Install Docker Compose on Debian
Use the guide below to install latest Docker Compose on Debian 10 / Debian 11
Step 5: Test Docker installation
Run a test docker container:
$ docker run --rm -it --name test alpine:latest /bin/sh latest: Pulling from library/alpine 2408cc74d12b: Pull complete Digest: sha256:686d8c9dfa6f3ccfc8230bc3178d23f84eeaf7e457f36f271ab1acc53015037c Status: Downloaded newer image for alpine:latest / # cat /etc/os-release NAME="Alpine Linux" ID=alpine VERSION_ID=3.16.0 PRETTY_NAME="Alpine Linux v3.16" HOME_URL="https://alpinelinux.org/" BUG_REPORT_URL="https://gitlab.alpinelinux.org/alpine/aports/-/issues" / # exit
Step 6: Test Docker Compose installation.
Create a test Docker Compose file.
Add below data to the file.
version: '3' services: web: image: nginx:latest ports: - "8080:80" links: - php php: image: php:7-fpm
Start service containers.
$ docker-compose up -d
Show running Containers
$ docker-compose ps
$ docker-compose stop $ docker-compose rm Going to remove vagrant_web_1, vagrant_php_1 Are you sure? [yN] y Removing vagrant_web_1 … done Removing vagrant_php_1 … done
Setup Docker UI (Optional)
If you need a UI management console for Docker hosts and containers, checkout Portainer.